Machine for surface treating shoe parts



Nov. 13, 1934. c. G. B ROSTROM MACHINE FOR SURFACE TREATING SHOE PARTS Filed Feb."

19. 1932 4 Sheets-Sheet l fivvgvma;

Nov- 13, 1934- c. G. BROSTROM MACHINE FOR SURFACE TREATING SHOE PARTS Filed Feb. 19. 1932 4 Sheets-Sheet 2 Nov. 13, 1934. c. G. BROSTROM MACHINE FOR SURFACE TREATING SHOE PARTS Filed Feb. 19. 1932 4 Sheets-Sheet 3 Rm W m Q w MM /N EM Q. 3 0 4 11 M M FIIIL m J Q M m m m m 0 5 l 0 1 5 Hw g v5 1 F NOV. 13, 1934. v c BRQSTRQM 1,980,376

MACHINE FOR SURFACE TREATING SHOE PARTS Filed Feb. 19. 1932 4 Sheets-Sheet 4 "P P K i Patented Nov. 13, 1934 i,i80,375 I .FFEQE MACHINE FOR SURFACE TREATING SHOE PARTS Charles G. Brostrom, Lynn, Mass., assignor to United Shoe Machinery Corporation, Paterson, N. J a corporation of New Jersey Application February 19, 1932, Serial No. 594,069

Claims.

This invention relates to improvements in machines for surface treating. shoe parts to prepare them, for example, for the reception of adhesive for securing them to other shoe parts. The invention is herein illustrated as embodied in a November 9, 1931, in the name of Walter H.

Wedger.

To the accomplishment of this object one feature of the invention consists in the provision, in a machine for roughing shoe parts, of means for forming in a shoe part a multiplicity of short, substantially non-intersecting, closely adjacent grooves or furrows, and mechanism for operating said means. The illustrated grooveor furrowforming means, hereinafter referred to as the roughing tool, comprises a'rotarytool in the nature of a wire brush, and means is provided for feeding the sole in a direction to advance its margin progressively past the roughing tool'and for guiding the sole as it is fed. The illustrated machine is provided with guiding means arranged to engage the edge of a sole near the area being operated upon by the roughing tool and to gage the width of the roughed area, and the roughing tool is rotated in a direction to cause its periphcry to move outwardly across the sole margin and thus to exert a force upon the sole tending to hold the sole edge against the guiding means. The illustrated machine is also provided with feeding means comprising a so-called .basket type feed roll of novel construction which, in accordance with another feature of the inventicn, has a resilient peripheral portion of frustoconical form which is secured, at the small end of the roll, to a hub or carrier but which is left unsupported at the large end of the roll for yielding engagement with the work to accommodate variation in thickness and surface angularity of the work. The flaring peripheral portion of the illustrated feed roll comprises a plurality of resilient fingers which are equally spaced apart around the hub of the roll, and which, in general arrangement and appearance, are suggestive of the ribs of a woven basket. As shown, these resilient fingers are adapted to be brought successively into engagement with the work as the feed roll is rotated, and means is provided for simultaneously and equally'adjusting the resiliency of the fingers in accordance with the character of the work and the degree of pressure exerted upon the work by the roughing tool so as to provide for most effective feeding of the work without defacing or otherwise damaging the tread face of the sole.

Sole roughing machines as formerly constructed have been provided with means for feeding and guiding the sole but it has invariably been necessary heretofore for the operator to assist in the feeding and guiding of the sole, at least during operation upon the toe portion thereof, by manually swinging the sole to maintain it in proper relation to the roughing means.

Another object of the present invention is to provide, in a machine for surface treating the marginal portions of shoe parts, simple but reliable means for feeding and guiding the work which will operate to advance the sole margin progressively past the operatingmeans, even at the more sharply curved portions such, for example, as at the toe, without requiring any assistance from the operator.

To the accomplishment of this object, a further feature of the invention consists in the combination, in a machine of the type referred to, of a work support which, in the illustrated machine, comprises the novel feed roll already described, guide means for determining the direction of feed of a workpiece over said support, and a surface treating tool having operative movement in a line at an oblique angle to the direction of work feed, the force applied to the work by the tool in the operative movement thereof being resolvable into components of which one is in the direction of work feed and another is toward the guide means. The illustrated guide means comprises two edge gages which are constructed and arranged to facilitate the guiding and feeding of a sole while its margin, and particularly the toe'portion thereof, is being operated upon. The'surface treating tool, illustrated as a rotary roughing brush, is arranged to turn about a horizontal axis inclined at an angle of somewhat less than to the axis of the feed roll and the tool is rotated in a direction to cause its periphery to move outwardly across the sole edge at its point of engagement with the sole, the arrangement being such as to adapt the tool to cooperate with the feed roll in the feeding of the work and to exert a force upon the sole tending to keep the sole edge constantly in engagement with the edge gages. Also, as shown, the area of engagement of the roughing tool with the work is offset, relatively to the area of engagement of the feed roll with the work, in a direction opposite to the direction of work feed, such an arrangrnent causing the roughing tool to exert a force tending to swing the sole in a direction to cause the roughing operation to progress around the toe of the sole Without the necessity of any assistance or manual guidance on the part of the operator. The turning of the sole at the toe and at other convexly curved portions of the sole margin is further facilitated by a novel spaced arrangement of the edge gages and by the provision of resilient work engaging means on one of the gages, such arrangement and construction constituting further features of the invention.

The invention also consists in other novel features of construction and combinations and ar-- rangements of parts hereinafter described and claimed the advantages of which will be obvious to those skilled in the art. The invention will be described with reference to the accompanying drawings, in which Fig. 1 is a view in side elevation, partially broken away, of the head of a machine embodying the present invention;

Fig. 2 is a detail sectional view taken along the line IIII of Fig. 1;

Fig. 3 is atop plan view of the machine; Fig. 4 is a plan view on an enlarged scale of the operating parts of the machine;

Fig. 5 is a longitudinal sectional feed roll;

Fig. 6 is a plan view of a portionof the work table showing the construction and arrangement of the edge gages and illustrating the manner in which they assist in feeding and guiding a sole; .Fig. '7 is a fragmentary perspective view of one of the edge gages and associated adjusting mechanism; and

Fig. 8 is a plan view of the edge gages illustrating their action upon the work.

'Referring to the drawings, the illustrated machine comprises a work table 14; a driven basview of the ket feed roll 16, the upper portion of which projects through an opening 18 in the table to engage the lower surface of a sole, such as the sole S; a driven roughing tool 20 located above the table and arranged to operate upon the marginal portion-of the upper surface of the sole and to cooperate with the feed roll in feeding the sole; two work-guiding and gaging devices22 and 24 which are mounted on the table 14 and are arranged to engage the sole edge at points which,

1 having regard to the direction of work feed, are

located respectively forwardly and rearwardly of the area of operation of the roughing tool upon the sole; and a head 26 (Fig. 1) which surmounts a pedestal 28 and supports the table, the feed wheel, and the roughing tool. The work table 14 serves to support portions of the sole which are remote from the locality where it is engaged by the'feed roll and the roughing tool. As shown,

the table 14 is semi-circular in outline and is mounted upon a bracket 30 which is pivoted at 32 to the head 26 and which is provided with bearings 36 for a horizontal shaft 34 to which the feed roll 16 is fixedly secured. The roughing tool 20 is in the nature of a rotary roughing brush comprising a hub'38 and a multiplicity of wire bristles 40, the latter extending radially with respect to the hub and being secured at their inner ends to a band 42 of flexible material, such as canvas, which encircles the hub 38 and is removably secured thereto.

The guiding and gaging devices 22 and 24 (hereinafter referred to as edge gages) are adjustably mounted upon the work table 14 and serve to guide the work and to gage the widthof the roughed area thereon. The relative arrangement of the feed roll 16, the roughing tool 20, and the edge gages 22 and 24 is such that the work is so fed as to cause the roughing operation to progress from the heel; end of the sole forwardly along one lateralmargin of the shank and forepart, around the toe, and thereafter rearwardly along the forepart,shank and heel portion at the opposite lateral margin of the sole, without requiring that the sole be guided by the operator. As will hereinafter be explained, the feed roll 16 is formed with a peripheral, work-engaging portion which is adapted to yield to accommodate variations in workthic'kness. Under certain conditions, however, the feed roll 16 is capable of yielding bodily to a limited extent to supplement the yielding of its peripheral portion. The feed roll 16 is also capable of being manually depressed from a normal position in which it is adapted to cooperate with the roughing tool in feeding the work to a position in which there is ample clearance between the feed roll and the roughing tool to insure against danger of damage resulting to either the roughing tool or the feed roll through contact of those members in case the machine should be driven when no work has been introduced therein. This bodily yielding movement of the feed. roll ispermitted by means of a stiff spring 46 which engages a projection 48 on the pivotally mounted bracket 30 and normally holds the projection 48 in engagement with the fiattened surface 50 of a cam 52 formed on a cam lever 54 which is pivoted at 56 between the opposite sides of the head 26 and is adapted to be manually operated, as will be hereinafter described. As shown, the spring 46 encircles, and is partially supported by, a rod 58 one end of which is pivoted at 60 to the bracket projection 48. The rear portion of the spring 46 is received in a thimble 62 which is threaded in the rear of the head26 and is provided with a knurled portion 64 by means of which it may be turned to adjust the compression of the spring. Preferably, the compression of the spring 46 is adjusted to prevent the feed roll 16 from yielding bodily as a result of any pressure normally exerted against the work by the roughing tool. By turning the thimble 62 to lessen the table will remain substantially level after yielding so that its work supporting function will not be interfered with. For the purpose of lowering the work table 14 and the feed roll 16 to provide for clearance between the periphery of the feed roll 16 and the periphery of the roughing tool 20 the 1 cam lever' 54 is adapted to be rocked downwardly to engage the. high portion 66 of the cam 52 with the 1 projection 48, to rock the bracket 30 about the pivot 32, against the action of the spring 46.

The work table 14 issecured to the bracket 30 with provision for both vertical and horizontal adjustment relatively thereto. To this end a depending flange 70 on the table (see Figs. 1 and 2) is secured by means of two screws 72 to a block '74 which, in turn, is secured by a screw '76 to the bracket 30, the screws '72 extending through vertically elongated slots 78 in the flange '70 and being threaded into the block '74, while the screw '76 extends through a horizontally elongated slot 80 in the bracket and is threaded into the block '74. To maintain the table 14 in fixed angular relation to the bracket 30 a vertical rib 82 on the flange '70 fits into a corresponding groove in the block '74 while a horizontal rib 84 on the block '74 fits into a corresponding groove in the racket 30. By loosening the bolt '72 the table 14 may be adjusted vertically relatively to the bracket 30 and to the feed roll 16 to vary the extent of projection of the periphery of the feed roll above the table. In order that a fine adjustment of the vertical position of the table may be obtained, a thumb screw 86 is threaded through a split lug 88 in the bracket 30 and arranged to' positively secured in vertically adjusted position by means of the screws '72. The slot permits horizontal adjustment of the table 14 together with the edge gages 22 and 24 to vary the position of the sole edgewise with respect to the roughing tool and thus to vary the width of the marginal area of the sole to be acted upon by the roughing tool. This avoids the necessity of separately adjusting the edge gages relatively to the table 14 for the purpose of varying the width of the roughed area upon the sole.

In order to adapt the machine for operating upon sole margins which have been beveled without causing the sole to be forced out from between the roughing tool and the feed roll, the edge gages are positioned, as shown, so that the point of intersection of the vertical axial and the central radial planes of the roughing tool is located inwardly from the edge of a sole positioned against the edge gages. As a result of this arrangement there is little if any tendency for beveled sole margins to be forced out from between the roughing tool and the feed roll and away-from the edge gages as the soles are being fed and operated upon.

The edge gages 22 and 24 are mounted upon the upper surface of the work table 14 in spaced relation in order that the sole may be swung edgewise as required while operating at the more sharply curved portions of the sole margin without danger of being forced outwardly from between the roughing tool and the feed roll. The edge gages are mounted with provision for adjustment in all directions upon the surface of the table 14 to enable them to be set relatively to each other and to the feed roll to adapt them for use in connection with soles of any particular size and shape. In addition, the edge gage 24 is mounted upon a slide 112 the position of which is controlled by a hand lever 122 which is located beneath the table 14 at the front of the machine and whereby the operator may conveniently adjust the gage 24 toward or from the gage 22 to vary the width of the gap between the gages the better to accommodate soles having toes of different shapes. As shown, the edge gage 22 comprises a plate having a rounded front portion 94 adapted to engage the edge of a sole, and a rearwardly extending portion which is slotted at 95 (Fig. 6) to receive a screw 98 by means of which it is adjustably secured to the table. A spring lip 100 projects forwardly from the workengaging portion of the gage 22 in position to overlie the face of a sole being operated upon to prevent accidental upward displacement or the sole. The edge gage 24' comprises a spring finger 104'whichis secured by means of a screw 186 to one side of a plate 108 which in turn is secured by means of a screw 110 to the slide 112 on the table 14. As shown, the spring finger 104 extends past the rounded forward extremity'of the plate 108 and is provided with a rearwardly curved free extremity 114 which is adapted to engage the edge of a sole. A spring hp 116 similar to the lip 100 extends forwardly from the plate 108 to overlie the sole and to cooperate with the lip 100 in preventing accidental upward displacement of the sole. The screw 110 extends through an elongated slot 118 in the gage plate 108 arranged to permit adjustment of the gage relatively to the slide 112. The slots 96 and 118 permit the gages to be initially set or subsequently adjusted toward or from the feed roll to provide for a desired width of eration upon a sole has been nearly completed, to

place a new sole upon the table 14 with the heel end of the new sole overlapping the heel end of the roughed sole, thereby insuring against loss of time between operations performed upon successive soles. In such cases, it may be desirable to have the spring 46 yield to permit downward privy.

bodily movement of the feed roll in addition to the yielding of the periphery of the roll to accommodate the substantial increase in work thickness due to the overlapping or" the soles. In such cases also, the lips 100 and 116 on the edge gages are particularly useful in preventing the overlapped sole from being displaced above the tops of the gages.

The slide 112 which carries the edge gage 24 is mounted in a slot 120 in the table with provision for sliding adjustment to move'the gage 24 toward and from the gage 22. The hand lever 122, by means of which the width of the gap between the gages 22 and 24 may be conveniently adjusted from the front of the machine, is pivo ted at 124 to the lower side of the table and the rear end of the lever 122 is connected by means of a link 126 (Fig. 9) to the slide 112. The lever 122 extends forwardly to a point'adjacent to the front edge of the table 14 where it may be conveniently grasped by the operator. For the purpose of securing the gage 24 in adjusted position a spring-pressed detent 128, carried by the lever 122, is arranged to engage with a series of teeth 130 formed on a plate 132 secured to the lower side of the table. By adjusting the gage 124 toward or from the gage 22 by means of the lever 122, the operator may readily vary the width of the gap between the gages as y may be required to adapt themfor use in con-' nection with soles having different sizes and shapes of toes. The gap between the gages 22 and 24 is widened when operating upon soles having comparatively wide and blunt toes and is ,15 narrowed when operating upon soles having more sharply curved or pointed toes in order to facili tate the turning of the sole at the toe.

of the machine. The spring finger 164 carried by the gage 24 is adapted to yield to the pressure of the sole as the toe portion of a sole is being operated upon, as indicated by the full line position of the finger 104 in Fig. 6, to enable the toe of the sole to extend somewhat further rearwardly into the gap between the edge gages and thus to insure against possibility of the sole being accidentally thrown out from beneath the roughing tool during the rapid swinging of the sole while the toe is being operated upon. As the sole approaches the end of its swinging movement, however, the end thrust of the sole against the spring finger 104 diminishes, permitting the 15 finger to react and thus to assist in completing the swinging movement, by clearing the point of the toe of the sole from behind the gage 24, as indicated by the dotted line positions of the finger and the sole in Fig. 6. Thus, the action of the spring finger 104 insures against possible jamming of the 'toe of the sole in the gap between the edge gages and facilitates uninterrupted feeding of the sole while the toe is being operated upon.

In order to provide for the positive feed of a sole irrespective of variations in the thickness of the sole margin and in the angular relation of the opposite surfaces thereof, without interfering with the necessary swinging of the sole as the roughing operation progresses around the toe, and without defacing or otherwise damaging 'the tread face of the sole, a feed roll, hereinbefore referred to as a basket type roll, has been employed which embodies various novel features 0f construction. The basket feed roll ischaracterized by having a resilient peripheral portion of frusto-conical form which is secured to a hub or carrier at the small end of the roll but'which is left unsupported at the large end of the roll for yielding engagement with the work at that 'end of the roll only. This construction .and ar-' rangement provides for a restricted area of contact of the feed roll with the sole, a condition which greatly facilitates the turning of the sole at the toe. In the illustrated feed roll, the peripheral work-engaging portion thereof is com' posed of a plurality of inwardly yielding spring fingers 140, each of which is fixedly secured at one end to an annular flange 142 formed on a hub 144 that is keyed to the shaft 34 and is held against axial movement on the shaft by means of a set screw 145. The opposite extremities of the fingers 140 are unsupported and normally the fingers slope outwardly at a small angle from the fiange 142, as best shown in Fig. 5.' The fingers 140 are spaced apart so as to engage the Work successively as the feed roll rotates and so as to yield each independently of the others as it engages .the work; As shown, the inner end,

' them against the flange 142. The spring fingers 140 are supported at points spaced a short distance rearwardly of the fiange142 by means of a spreader member 152 which is threaded upon the hub 144'. The spreader member 152 is adapted tobe turned upon the hub 144 for the purpose of adjusting the flare of the fingers 140. A lock Thus the stifiness and resiliency of the spring fingers may be adjusted in accordance with the character of the sole material and the amount of pressure exerted upon the sole by the roughing tool. The above-described construction of the feed roll is such that, in cooperation with the roughing tool, an effective positive feed of the work is insured without danger of defacing or otherwise injuring the surface of the sole. The importance of this advantage will be appreciated when it is realized that it is the tread face of the sole which is engaged by the feed roll. The yielding of the spring fingers 140 enables the feed roll to accommodate itself to variations in the thickness and surface angularity of the work. For example, in operating upon a sole the margin of which is reduced or beveled along the shank portion but is of full thickness around the forepart, the fingers 140 will readily yield or react as required to provide adequate support and feeding engagement with the differently formed portions of the sole margin. 1

.The feed roll 16 is driven by means of a sprocket chain 158 arranged to pass over a sprocket wheel 160 which is secured to therear end of the feed roll shaft 34. The sprocket chain 158 may be driven by means of a sprocket wheel (not shown) on ashaft which may be connected with any suitable source of power. The feed roll shaft 34- is retained against axial displacement by engagement of the hub of the sprocket 160 with the rearmost shaft bearing 36 and by a collar 162-on the shaft 34 arranged to engage the foremost shaft bearing 36.

The roughing tool 20 is secured to a shaft 166 which is mounted to turn in a bearing formed in the front end of an arm 168 the rear portion of which is mounted to turn upon a sleeve 1'70 carried by a bracket 1'72 which is secured by meansof bolts 174 to the head 26. A rod 176 pivoted at 178 to a forward extension of the bracket 172 extends upwardly through an opening in the arm 168 and is threaded to receive a thumb nut 180 which engages the upper side of the arm 168. A coiled spring 182 encircling the rod 176 between the bracket 172 and the arm 168 holds the arm in engagement with the thumb screw 180. The thumb screw 180 may be turned to adjust the vertical position of the roughing tool to compensate for wearing away of the bristles or to vary the depth to which the bristles shall penetrate the work.

The roughing tool 20 is driven by means of a belt 184 which passes over a pulley. 186 which is fast on the roughing tool shaft 166 and over a pulley 188 which is fast upon one end of a shaft 190 that is journaled in the sleeve 170. The shaft 190 is driven by means of a belt 192 which passes over a pulley 194 that is fixedly secured to the opposite end of the shaft 190. passes over a second pulley which is not shown but which may be secured to the shaft that drives the sprocket chain 158. The roughing tool is driven in a counterclockwise direction, viewed from the right-hand side of the machine, in order that it shall have a tendency to urge the wor toward the edge gages 22 and 24.

In order that the roughing tool shall cooperate With the feed roll in feeding the work, the rough ing tool is arranged so as to have an operative movement in a direction at an oblique angle to the direction of work feed such that the force. applied to the work by the tool in said movement shall be resolvable into components one of which is in the direction of work feed and the other of which is toward the edge gages. As shown, the roughing tool is arranged to rotate in. a plane disposed at an angle of somewhat less than 30 to the vertical axial plane of the feed wheel shaft 34 and consequently at an angle of somewhat more than 60 to the direction of work feed. The arm 168 which carries the roughing tool is accordingly mounted for tilting adjustment in a vertical plane which is parallel to the plane of rotation of the roughing tool or, in other words, about an axis parallel to the axis of the tool shaft. As shown, the bearing for the tool shaft 166 comprises a block 196 (Fig. 3) which is secured by screws 198 to the arm 168 with provision for a limited amount of horizontal swinging movement about the center or the area of engagement of the roughing tool with the work to permit of a slight adjustment of the angle of the path of the roughing tool relatively to the work. For this purpose the screws 198 extend through arcuate slots 200 which are curved about a vertical axis. extending through the center of the area of engagement of the roughing tool with the work.

The arrangement of the roughing tool is also such that in addition to having an operative movement arranged to assist in feeding the work the action of the tool upon the work: shall have a distinct tendency to swing the work horizontally in a counterclockwise direction, that being the direction in which the sole must swing in order to transfer the field of operation of the roughing tool around the toe and other convexly curved portions of the sole margins; For this purpose, the'roughing tool is disposed so that its area of engagement with the work is offset relatively to the area of engagement of the feed roll with the work, in a direction opposite to the direction of work .feed. This is best illustrated in Fig. 6 whereinA indicates the center of the area of engagement of the feed roll with the lower face of the sole S, and B indicates the area of engagement of the roughing tool with the upper surface of the sole. With this relative arrangement of the roughing tool and the feed wheel the roughing tool will exert a force upon the work tending to turn it in the direction in which the sole must be swung while the roughing tool is operating along the convexly curved portions of the sole margin. This arrangement'is particularly important inasmuch as it insures that the sole shall be swung through an arc of 180 as required to enable the roughing operation to proceed around the toe of the sole.

The roughing tool 20 is fixedly secured to the tool shaft 166 by means of a tapered pin 204 -(Fig. 3) which extends through the hub 38 of the roughing tool and through the tool shaft. The flexible band 42 which carries the bristles40 and encircles the hub 38 is herein shown as secured to the hub by means of a plurality of clamping studs 206 arranged to overlie the band in localities from which the bristles have been omitted. The clamping studs 206 are carried by levers ZOE-which are pivoted to one side of the hub 38 and each of which has an inner end portion that is engaged by a cone nut 210 (Fig. 4) that is threaded upon the tool shaft and is adapted to be locked in position on the shaft by means of a check nut 212. The relative arrangement of the cone nut 210, the levers-208, and the clamping studs 206 is such that by turning the nut 210 the levers may be swung to increase or diminish the tension exerted by the clamping studs upon the band. The band is held against'edgewise disp1acement upon the hub by pins 2l4 WhiCh are adapted toextend inwardly through apertures in theband. The above-described means for securing the band to the hub is substantially the same as that employed for a similar purpose in a machine disclosed in my copending application Serial No. 594,529, filed February 23, 1932, and reference may be had to said application fordetails of construction not fully disclosed herein.

Provisionis made for receiving and carrying away the dust caused by the roughing operation. For this purpose a conduit 216 leading to the pipes of a factory suction system is connected at its forward end to a dust-receiving head 218 the mouth of which is located closely adjacent to the lower rear portion of the, roughing tool and is provided with forwardly extending side and bottom walls and arranged to underlie and embrace the opposite sides of the roughing tool. In order to prevent the dust from being carried around with the tool as the latter rotates the dust-receiving head 218 is provided with a deflector 220 (Fig. 3) which is arranged closely adjacent to the peripheral surface of the roughing tool and which is adjustable toward the axis of the tool to compensate for wearing away of the brush. For this purpose the deflector 220 is secured to the dust head 218 by means of a thumb screw 222 which is threaded into 2, depending portion of the deflector and extends through a horizontally elongated slot 224 (see Fig. 1) in the side of the dust head. As shown, the dust head 218 is secured by means of bolts .226 to the head 26. Suitable guards 223 are provided for the pulleys on the drive shaft 190 and tool shaft 166.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is: r

1. In a machine for roughing shoe parts, a

roughing tool adapted to form in a shoe part a multiplicity of closely-adjacent grooves or furrows, and means for relatively moving a shoe part and said tool to cause the tool to operate progressively along the margin of-the part and to cause the furrows to extend only in directions transverse to the edgeof the part.

2. In a machine for roughing shoe parts, a

roughing tool adapted to form in a shoe part a multiplicity of closely-adjacent grooves or furrows, and means for relatively moving the shoe part and said tool to cause the roughing operation to proceed progressively along the margin of the part and to cause the furrows to extend only in directions obliqueto the edge of the part.

,3. In a machine for roughing the margins of soles, a plurality of roughing members, means for moving the members in substantially parallel paths across the margin of a sole in directions oblique to the sole edgeto form av series of substantially straight and parallel scratches extending obliquely across the sole margin, and means for moving the sole past the roughing members to cause the roughing operation to proceed progressively along the sole margin.

4. In a machine for roughing the margins of soles, a rotary roughing tool, means for rotating the tool, and means for feeding and guiding a sole and automatically turning it to advance its margin progressively past the roughing tool from a point in one lateral margin of the sole to a point in the opposite lateral margin of the sole without manual assistance by the operator.

5. In a machine forroughing the margins of soles, a sole feeding member, sole edge gaging means, and a roughing tool arranged to cooperate with said feeding and edge gaging means to advance the margin of the sole progressively past the roughing means, said tool having its'sole engaging portion movable in a direction to urge the sole toward said gaging means.

6. In a machine for roughing the margins of soles, a sole feeding member, sole edge gaging means, and a roughing tool having operative movement in a direction oblique to that of said feeding member and arranged to cooperate with the latter in feeding the sole past said gaging means and to exert a force against the sole tending to turn the sole edgewise in a direction to transfer the area of operation of the roughing tool around portions of the sole margin having convexly curved edges.

' '7. In a machine for roughing the margins of soles, a sole supporting feed roll, sole edge gaging means, and a rotary tool for roughing the sole margin, said tool having operative movement in a direction disposed at an oblique angle to the direction of feed of the sole, and means for rotating the roughing tool in a direction to urge the sole toward said edge gaging means.

8. In a machine for surface treating the marginal portions of shoe parts, the combination of a work supporting feed roll, guide means for determining the direction of feed of a work piece,

and a surface treating tool arranged to cooperate with said feed roll in feeding the work, said tool having its operative portion movable in a direction at an oblique angle to the axis of the feed ,roll so that the force applied to the work by the tool in'said operative movement is resolvable into components of which one is in the direction of feed and another is toward the guide means.

9. In a machine for surface treatingthe marginal portions of shoe parts, the combination of a work supporting feed roll, guide members spaced apart to'engage the edge of a work piece at separated points for determining the direction of feed of the work piece along said support, and a surface treating tool arranged to cooperate with said feed roll in feeding the work, said tool having its operative portion movable in a direction at an oblique angle to said'direction of feed, sothat the force appliedto the Work by the tool in said operative movement is resolvable into-components of which one is in the direction of feed and another'is in a direction between said guide members.

10. In a machine for roughing the margins of shoe soles, the combination of a sole supporting feed roll, guide means for determining the direction of feed of a sole being acted upon by the feed roll, a rotary-roughing tool having its operative portion movable in'a direction at an oblique'angle to the axis of 'said feed roll so that the force applied to the sole by said tool is resolvable into components of which one is in the direction of feed and another is toward said guide means, and said tool being located relatively to said feed \roll to impart a turning movement to the sole to facilitate the swinging of the sole as the roughing operation progresses around the toe.

11. In a machine for roughing the margins of shoe soles, the combination of a sole supporting feed roll, guide means for determining the direc- -'tion of feed of a sole being acted upon by the feed roll, a rotary roughing tool having operative movement in a line at an oblique angle to said direction of feed, the force applied to the sole by said tool being resolvable into components of which'one is in the direction'of feed and another isit'ow'ar'd said guide means, and the area of engagement of said tool with the sole 12. In a machine for roughing the margins of shoe soles, the combination of a sole supporting feedroll, a rotary roughing tool'having its axis oblique relatively to the axis of said feed roll, and guiding means for determining the direction of feed of a sole along said support, said guiding means being adjusted to position thesole relatively to the tool with the pointof intersection of the vertical axial and central radial planes of the tool located inwardly from the sole edge.

13. In a machine for surface treating the marginal portions of shoe soles, a surface treating tool, and a driven Work supporting feed roll com prising a hub, and a resilient peripheral portion of frusto-conical form, said peripheral portion being secured to said hub at the small end of the roll and being left unsupported at the large end. of the roll for yielding engagement with the work.

14. Ina machine for surfacetreating the marginal portions of shoe. soles, a surface treating tool, and a driven Work supporting feed roll comprising a hub, a resilient peripheral portion of frusto-conical form, said peripheral portion being secured to said hub at the small end of the roll and being left unsupported at the large end of the roll for yielding engagement with the Work, and means for adjusting the resiliency of said peripheral portion.

15.- In a machine for surface treating the marginal portions of shoe soles, a surface treating tool, and a driven work supporting feed roll comprising a hub, and a peripheral portion having the form of a frustum'of a cone and comprising a plurality of spaced'resilient fingers each secured at one end to said hub and having its opposite end free, the free ends of the fingers defining the large end of the roll and being arranged to engage the work opposite said tool.

16-. In a machine for surface treatingthe marginal portions of shoe soles, a surface treating tool, and a driven work supporting feed roll comprising a hub, and a peripheral portion having the form of a frustum of a cone and comprising 'a plurality of spaced resilient fingers'each secured at one end to said hub and having its opposite end free,'the free ends of the fingers defining the large end of the roll and being arranged to engage the work opposite said tool, and means for adjusting theflare of said fingers to vary the resiliency thereof.

. 17. In amachine for surface treating the marginal portions of shoe soles a surface treating tool, and adriven work supporting feed roll comprising. a hub, 'and'a peripheral portion having the form of a frustum of a cone andv comprising a plurality of spaced resilient fingers each secured at one end to said hub and having its opposite end free, the free ends of the fingers defining the large end of the roll and being arranged to engage the work opposite said tool, and means for adjusting the flare of :said fingers to vary the resiliency thereof comprisingan annular spreader 'member threaded on said hub and having its periphery engaging the inner sides of said fingers,

ilic

said member being adapted to be turned on the hub to adjust the flare of the fingers.

18. In a machine for surface treating the marginal portions of shoe parts, a surface treating tool, means for feeding a shoe part to advance its margin past the tool, and an edge gage for determining the width of the marginal portion of the shoe part to be treated, said gage being constructed and arranged to yield under the pressure of the work and to react to facilitate swinging of the work during operation upon portions thereof having convexly curved edges,

19. Ina machine for surface treating the marginal portions of shoe parts having convexly curved edges, a surface treating tool, means for feeding a shoe part to advance its margin past the tool, and two edge gages spaced apart to engage the edge of the work at separated points, one of the said gages being constructed and arranged to yield during operation upon a convexly curved edge portion of a shoe part and to react to prevent jamming of the shoe part between said gages.

20. In a machine for surface treating the marginal portions of soles, a surface treating tool, means for feeding the sole to advance its margin past the tool, sole guiding means comprising an edge gage adapted to yield under pressure of the work and to react to facilitate swinging of the work, and a lip associated with said gage constructed and arranged to overlie the face of the sole.

21. In a machine for surface treating the marginal portions of soles, a work table, an edge gage mounted on the work table, a lip on the edge gage for overlying the face of the sole, a feed roll arranged to engage the lower face of a sole through an opening in the table, and a surface treating tool arranged to engage the upper face of the sole. l

22. In a machine for roughing shoe soles, a work table having an opening therein, a feed roll arranged to engage a sole on the table through said opening, a guide member on the table arranged to engage the sole edge at a point in front of the vertical axial plane of the feed roll, a slide mounted in the table, a second guide member mounted upon said slide, a hand lever mounted beneath the table, and connections between the hand lever and the slide for adjusting the second guide member toward and from the first guide member.

23. In a machine for roughing shoe parts, a machine frame, an arm pivoted for vertical adjustment in the frame, a roughing tool carried by said arm, means for adjusting the arm to vary the action of the roughing tool, a carrier pivoted to the frame for vertical adjustment beneath said arm, a work table mounted on said carrier and having an opening therein, a feed roll mounted on said carrier and arranged to project through the opening in the table, and means for adjusting the table vertically with respect to the feed roll.

24. In a machine for roughing shoe parts, a machine frame, an arm pivoted for vertical adjustment in the frame, a roughing tool carried by said arm, means for adjusting the arm to vary the action of the roughing tool, a carrier pivoted to the frame for vertical adjustment beneath said arm, a work table mounted on said carrier and having an opening therein, a feed roll mounted on said carrier and arranged to project through the opening in the table, means for adjusting the table vertically with respect to the feed roll, and means for adjusting said carrier to vary the relation of the table and the feed roll to the roughing tool.

25. In a machine for roughing shoe parts, a work table, a roughing tool located above the Work table, a carrier for the roughing tool, a

spring urging the carrier upwardly, adjustable means for limiting the upward movement of said carrier, a feed roll arranged to project through an opening in the table, and means for retracting the feed roll from an operative to an inoperative position.

CHARLES G. BROSTROM. 

